Now USB products have been very much, a large number of electronic products need to charge through the USB interface. Of course, charging through the computer is the most, but if there is no computer, how to charge through the USB interface. Then you can use this USB adapter, one side of which is our normal plug, which can be directly plugged into the socket, and the other side is the USB interface. USB electronic products can be connected to this USB adapter and use the general socket for charging. Moreover, this USB adapter has three USB interfaces, suitable for those with a lot of USB products. It costs 20 US dollars abroad currently.